phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1114 The table 'phpbb_sessions' is full

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('9dcfbc85d0c994150a2734f0ce142f76', -1, 1516758371, 1516758371, '36535134', -1, 0, 0)

Line : 187
File : sessions.php